If you need some help, call us on 0800 145 6789* or go to bt.com/producthelp 
Quick set-up guide6
Battery performance
•  To keep the batteries in the 
best condition, leave the 
handset off the base for a 
few hours at a time.
•  Running the batteries right 
down at least once a week 
will help them last as long  
as possible.
•  After charging your handset 
for the first time, subsequent 
charging time for the 
batteries is approximately  
8 hours.
•  The charge capacity of 
rechargeable batteries will  
go down over time, which 
will reduce the talk and 
standby time. Eventually 
they’ll need replacing. 
For details on how to get 
replacement batteries,  
call the helpline on  
0800 145 6789*.
3. Once set-up is complete your handset will display 
Please
 
check
 
line
 
cord
, place the handset on the 
base to charge.
4. After 24 hours, plug the phone line cord into the 
phone wall socket.
IMPORTANT 
Charge the handset batteries for 24 hours or your 
phone might not work.
Set up your additional handsets (multipacks only)
1. For additional handsets and chargers: plug the 
mains power adaptor into the underside of the 
charger and plug the other end into the mains wall 
socket and switch on the power.
BT2100 Twin
2. Activate the batteries as explained on page 5.
3. Place the handset on the charger to charge for  
24 hours.
1